rule win_liteduke_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.liteduke."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.liteduke"
        malpedia_rule_date = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { ff75fc 8f45f0 c745f402000000 c745e801000000 8d45e8 }
            // n = 5, score = 200
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   8f45f0               | pop                 dword ptr [ebp - 0x10]
            //   c745f402000000       | mov                 dword ptr [ebp - 0xc], 2
            //   c745e801000000       | mov                 dword ptr [ebp - 0x18], 1
            //   8d45e8               | lea                 eax, [ebp - 0x18]

        $sequence_1 = { 8b5d08 c70300000000 c7430400000000 c7430801234567 c7430c89abcdef c74310fedcba98 c7431476543210 }
            // n = 7, score = 200
            //   8b5d08               | mov                 ebx, dword ptr [ebp + 8]
            //   c70300000000         | mov                 dword ptr [ebx], 0
            //   c7430400000000       | mov                 dword ptr [ebx + 4], 0
            //   c7430801234567       | mov                 dword ptr [ebx + 8], 0x67452301
            //   c7430c89abcdef       | mov                 dword ptr [ebx + 0xc], 0xefcdab89
            //   c74310fedcba98       | mov                 dword ptr [ebx + 0x10], 0x98badcfe
            //   c7431476543210       | mov                 dword ptr [ebx + 0x14], 0x10325476

        $sequence_2 = { 5a 8d928df4ffff c70201000000 8b3e 09ff 742a 8b4604 }
            // n = 7, score = 200
            //   5a                   | pop                 edx
            //   8d928df4ffff         | lea                 edx, [edx - 0xb73]
            //   c70201000000         | mov                 dword ptr [edx], 1
            //   8b3e                 | mov                 edi, dword ptr [esi]
            //   09ff                 | or                  edi, edi
            //   742a                 | je                  0x2c
            //   8b4604               | mov                 eax, dword ptr [esi + 4]

        $sequence_3 = { 5a 8955f8 895dec 51 e8???????? 59 8d89d4faffff }
            // n = 7, score = 200
            //   5a                   | pop                 edx
            //   8955f8               | mov                 dword ptr [ebp - 8], edx
            //   895dec               | mov                 dword ptr [ebp - 0x14], ebx
            //   51                   | push                ecx
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   8d89d4faffff         | lea                 ecx, [ecx - 0x52c]

        $sequence_4 = { 6802000080 ff15???????? 09c0 0f85de000000 8db5fcefffff 8d4dfc 837d0c00 }
            // n = 7, score = 200
            //   6802000080           | push                0x80000002
            //   ff15????????         |                     
            //   09c0                 | or                  eax, eax
            //   0f85de000000         | jne                 0xe4
            //   8db5fcefffff         | lea                 esi, [ebp - 0x1004]
            //   8d4dfc               | lea                 ecx, [ebp - 4]
            //   837d0c00             | cmp                 dword ptr [ebp + 0xc], 0

        $sequence_5 = { ff35???????? e8???????? ff35???????? ff15???????? c705????????00000000 6a04 }
            // n = 6, score = 200
            //   ff35????????         |                     
            //   e8????????           |                     
            //   ff35????????         |                     
            //   ff15????????         |                     
            //   c705????????00000000     |     
            //   6a04                 | push                4

        $sequence_6 = { b800000000 8a03 c1e804 83f809 7f05 83c030 eb03 }
            // n = 7, score = 200
            //   b800000000           | mov                 eax, 0
            //   8a03                 | mov                 al, byte ptr [ebx]
            //   c1e804               | shr                 eax, 4
            //   83f809               | cmp                 eax, 9
            //   7f05                 | jg                  7
            //   83c030               | add                 eax, 0x30
            //   eb03                 | jmp                 5

        $sequence_7 = { 51 50 ff15???????? 83c40c 58 }
            // n = 5, score = 200
            //   51                   | push                ecx
            //   50                   | push                eax
            //   ff15????????         |                     
            //   83c40c               | add                 esp, 0xc
            //   58                   | pop                 eax

        $sequence_8 = { 0f8591000000 50 6a04 6800300000 6800100000 6a00 ff15???????? }
            // n = 7, score = 200
            //   0f8591000000         | jne                 0x97
            //   50                   | push                eax
            //   6a04                 | push                4
            //   6800300000           | push                0x3000
            //   6800100000           | push                0x1000
            //   6a00                 | push                0
            //   ff15????????         |                     

        $sequence_9 = { 8b45f4 8b5df8 c9 c20400 55 89e5 83ec18 }
            // n = 7, score = 200
            //   8b45f4               | mov                 eax, dword ptr [ebp - 0xc]
            //   8b5df8               | mov                 ebx, dword ptr [ebp - 8]
            //   c9                   | leave               
            //   c20400               | ret                 4
            //   55                   | push                ebp
            //   89e5                 | mov                 ebp, esp
            //   83ec18               | sub                 esp, 0x18

    condition:
        7 of them and filesize < 1171456
}